src/display/nr-arena-shape.cpp

   1 #define __NR_ARENA_SHAPE_C__
   2
   3 /*
   4  * RGBA display list system for inkscape
   5  *
   6  * Author:
   7  *   Lauris Kaplinski <lauris@kaplinski.com>
   8  *
   9  * Copyright (C) 2001-2002 Lauris Kaplinski
  10  * Copyright (C) 2001 Ximian, Inc.
  11  *
  12  * Released under GNU GPL, read the file 'COPYING' for more information
  13  */
  14
  15
  16
  17 #include <display/canvas-arena.h>
  18 #include <display/nr-arena.h>
  19 #include <display/nr-arena-shape.h>
  20 #include "display/curve.h"
  21 #include <libnr/n-art-bpath.h>
  22 #include <libnr/nr-path.h>
  23 #include <libnr/nr-pixops.h>
  24 #include <libnr/nr-matrix-ops.h>
  25 #include <libnr/nr-matrix-fns.h>
  26 #include <libnr/nr-blit.h>
  27 #include <livarot/Path.h>
  28 #include <livarot/float-line.h>
  29 #include <livarot/int-line.h>
  30 #include <style.h>
  31 #include "prefs-utils.h"
  32 #include "inkscape-cairo.h"
  33
  34 #include "sp-filter.h"
  35 #include "sp-filter-reference.h"
  36 #include "display/nr-filter.h"
  37
  38 #include <cairo.h>
  39
  40 //int  showRuns=0;
  41 void nr_pixblock_render_shape_mask_or(NRPixBlock &m,Shape* theS);
  42
  43 static void nr_arena_shape_class_init(NRArenaShapeClass *klass);
  44 static void nr_arena_shape_init(NRArenaShape *shape);
  45 static void nr_arena_shape_finalize(NRObject *object);
  46
  47 static NRArenaItem *nr_arena_shape_children(NRArenaItem *item);
  48 static void nr_arena_shape_add_child(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref);
  49 static void nr_arena_shape_remove_child(NRArenaItem *item, NRArenaItem *child);
  50 static void nr_arena_shape_set_child_position(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref);
  51
  52 static guint nr_arena_shape_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);
  53 static unsigned int nr_arena_shape_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags);
  54 static guint nr_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb);
  55 static NRArenaItem *nr_arena_shape_pick(NRArenaItem *item, NR::Point p, double delta, unsigned int sticky);
  56
  57 static NRArenaItemClass *shape_parent_class;
  58
  59 NRType
  60 nr_arena_shape_get_type(void)
  61 {
  62     static NRType type = 0;
  63     if (!type) {
  64         type = nr_object_register_type(NR_TYPE_ARENA_ITEM,
  65                                        "NRArenaShape",
  66                                        sizeof(NRArenaShapeClass),
  67                                        sizeof(NRArenaShape),
  68                                        (void (*)(NRObjectClass *)) nr_arena_shape_class_init,
  69                                        (void (*)(NRObject *)) nr_arena_shape_init);
  70     }
  71     return type;
  72 }
  73
  74 static void
  75 nr_arena_shape_class_init(NRArenaShapeClass *klass)
  76 {
  77     NRObjectClass *object_class;
  78     NRArenaItemClass *item_class;
  79
  80     object_class = (NRObjectClass *) klass;
  81     item_class = (NRArenaItemClass *) klass;
  82
  83     shape_parent_class = (NRArenaItemClass *)  ((NRObjectClass *) klass)->parent;
  84
  85     object_class->finalize = nr_arena_shape_finalize;
  86     object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaShape>;
  87
  88     item_class->children = nr_arena_shape_children;
  89     item_class->add_child = nr_arena_shape_add_child;
  90     item_class->set_child_position = nr_arena_shape_set_child_position;
  91     item_class->remove_child = nr_arena_shape_remove_child;
  92     item_class->update = nr_arena_shape_update;
  93     item_class->render = nr_arena_shape_render;
  94     item_class->clip = nr_arena_shape_clip;
  95     item_class->pick = nr_arena_shape_pick;
  96 }
  97
  98 /**
  99  * Initializes the arena shape, setting all parameters to null, 0, false,
 100  * or other defaults
 101  */
 102 static void
 103 nr_arena_shape_init(NRArenaShape *shape)
 104 {
 105     shape->curve = NULL;
 106     shape->style = NULL;
 107     shape->paintbox.x0 = shape->paintbox.y0 = 0.0F;
 108     shape->paintbox.x1 = shape->paintbox.y1 = 256.0F;
 109
 110     shape->ctm.set_identity();
 111     shape->fill_painter = NULL;
 112     shape->stroke_painter = NULL;
 113     shape->cached_fill = NULL;
 114     shape->cached_stroke = NULL;
 115     shape->cached_fpartialy = false;
 116     shape->cached_spartialy = false;
 117     shape->fill_shp = NULL;
 118     shape->stroke_shp = NULL;
 119
 120     shape->delayed_shp = false;
 121
 122     shape->approx_bbox.x0 = shape->approx_bbox.y0 = 0;
 123     shape->approx_bbox.x1 = shape->approx_bbox.y1 = 0;
 124     shape->cached_fctm.set_identity();
 125     shape->cached_sctm.set_identity();
 126
 127     shape->markers = NULL;
 128
 129     shape->last_pick = NULL;
 130     shape->repick_after = 0;
 131 }
 132
 133 static void
 134 nr_arena_shape_finalize(NRObject *object)
 135 {
 136     NRArenaShape *shape = (NRArenaShape *) object;
 137
 138     if (shape->fill_shp) delete shape->fill_shp;
 139     if (shape->stroke_shp) delete shape->stroke_shp;
 140     if (shape->cached_fill) delete shape->cached_fill;
 141     if (shape->cached_stroke) delete shape->cached_stroke;
 142     if (shape->fill_painter) sp_painter_free(shape->fill_painter);
 143     if (shape->stroke_painter) sp_painter_free(shape->stroke_painter);
 144
 145     if (shape->style) sp_style_unref(shape->style);
 146     if (shape->curve) shape->curve->unref();
 147
 148     ((NRObjectClass *) shape_parent_class)->finalize(object);
 149 }
 150
 151 /**
 152  * Retrieves the markers from the item
 153  */
 154 static NRArenaItem *
 155 nr_arena_shape_children(NRArenaItem *item)
 156 {
 157     NRArenaShape *shape = (NRArenaShape *) item;
 158
 159     return shape->markers;
 160 }
 161
 162 /**
 163  * Attaches child to item, and if ref is not NULL, sets it and ref->next as
 164  * the prev and next items.  If ref is NULL, then it sets the item's markers
 165  * as the next items.
 166  */
 167 static void
 168 nr_arena_shape_add_child(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref)
 169 {
 170     NRArenaShape *shape = (NRArenaShape *) item;
 171
 172     if (!ref) {
 173         shape->markers = nr_arena_item_attach(item, child, NULL, shape->markers);
 174     } else {
 175         ref->next = nr_arena_item_attach(item, child, ref, ref->next);
 176     }
 177
 178     nr_arena_item_request_update(item, NR_ARENA_ITEM_STATE_ALL, FALSE);
 179 }
 180
 181 /**
 182  * Removes child from the shape.  If there are no prev items in
 183  * the child, it sets items' markers to the next item in the child.
 184  */
 185 static void
 186 nr_arena_shape_remove_child(NRArenaItem *item, NRArenaItem *child)
 187 {
 188     NRArenaShape *shape = (NRArenaShape *) item;
 189
 190     if (child->prev) {
 191         nr_arena_item_detach(item, child);
 192     } else {
 193         shape->markers = nr_arena_item_detach(item, child);
 194     }
 195
 196     nr_arena_item_request_update(item, NR_ARENA_ITEM_STATE_ALL, FALSE);
 197 }
 198
 199 /**
 200  * Detaches child from item, and if there are no previous items in child, it
 201  * sets item's markers to the child.  It then attaches the child back onto the item.
 202  * If ref is null, it sets the markers to be the next item, otherwise it uses
 203  * the next/prev items in ref.
 204  */
 205 static void
 206 nr_arena_shape_set_child_position(NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref)
 207 {
 208     NRArenaShape *shape = (NRArenaShape *) item;
 209
 210     if (child->prev) {
 211         nr_arena_item_detach(item, child);
 212     } else {
 213         shape->markers = nr_arena_item_detach(item, child);
 214     }
 215
 216     if (!ref) {
 217         shape->markers = nr_arena_item_attach(item, child, NULL, shape->markers);
 218     } else {
 219         ref->next = nr_arena_item_attach(item, child, ref, ref->next);
 220     }
 221
 222     nr_arena_item_request_render(child);
 223 }
 224
 225 void nr_arena_shape_update_stroke(NRArenaShape *shape, NRGC* gc, NRRectL *area);
 226 void nr_arena_shape_update_fill(NRArenaShape *shape, NRGC *gc, NRRectL *area, bool force_shape = false);
 227 void nr_arena_shape_add_bboxes(NRArenaShape* shape,NRRect &bbox);
 228
 229 /**
 230  * Updates the arena shape 'item' and all of its children, including the markers.
 231  */
 232 static guint
 233 nr_arena_shape_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset)
 234 {
 235     NRRect bbox;
 236
 237     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 238
 239     unsigned int beststate = NR_ARENA_ITEM_STATE_ALL;
 240
 241     unsigned int newstate;
 242     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 243         newstate = nr_arena_item_invoke_update(child, area, gc, state, reset);
 244         beststate = beststate & newstate;
 245     }
 246
 247     if (!(state & NR_ARENA_ITEM_STATE_RENDER)) {
 248         /* We do not have to create rendering structures */
 249         shape->ctm = gc->transform;
 250         if (state & NR_ARENA_ITEM_STATE_BBOX) {
 251             if (shape->curve) {
 252                 NRBPath bp;
 253                 /* fixme: */
 254                 bbox.x0 = bbox.y0 = NR_HUGE;
 255                 bbox.x1 = bbox.y1 = -NR_HUGE;
 256                 bp.path = SP_CURVE_BPATH(shape->curve);
 257                 nr_path_matrix_bbox_union(&bp, gc->transform, &bbox);
 258                 item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 259                 item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 260                 item->bbox.x1 = (gint32)(bbox.x1 + 1.9999F);
 261                 item->bbox.y1 = (gint32)(bbox.y1 + 1.9999F);
 262             }
 263             if (beststate & NR_ARENA_ITEM_STATE_BBOX) {
 264                 for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 265                     nr_rect_l_union(&item->bbox, &item->bbox, &child->bbox);
 266                 }
 267             }
 268         }
 269         return (state | item->state);
 270     }
 271
 272     shape->delayed_shp=true;
 273     shape->ctm = gc->transform;
 274     bbox.x0 = bbox.y0 = NR_HUGE;
 275     bbox.x1 = bbox.y1 = -NR_HUGE;
 276
 277     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
 278
 279     if (shape->curve) {
 280         NRBPath bp;
 281         /* fixme: */
 282         bbox.x0 = bbox.y0 = NR_HUGE;
 283         bbox.x1 = bbox.y1 = -NR_HUGE;
 284         bp.path = SP_CURVE_BPATH(shape->curve);
 285         nr_path_matrix_bbox_union(&bp, gc->transform, &bbox);
 286         if (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE || outline) {
 287             float width, scale;
 288             scale = NR::expansion(gc->transform);
 289             width = MAX(0.125, shape->_stroke.width * scale);
 290             if ( fabs(shape->_stroke.width * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
 291                 bbox.x0-=width;
 292                 bbox.x1+=width;
 293                 bbox.y0-=width;
 294                 bbox.y1+=width;
 295             }
 296             // those pesky miters, now
 297             float miterMax=width*shape->_stroke.mitre_limit;
 298             if ( miterMax > 0.01 ) {
 299                 // grunt mode. we should compute the various miters instead (one for each point on the curve)
 300                 bbox.x0-=miterMax;
 301                 bbox.x1+=miterMax;
 302                 bbox.y0-=miterMax;
 303                 bbox.y1+=miterMax;
 304             }
 305         }
 306     } else {
 307     }
 308     shape->approx_bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 309     shape->approx_bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 310     shape->approx_bbox.x1 = (gint32)(bbox.x1 + 1.9999F);
 311     shape->approx_bbox.y1 = (gint32)(bbox.y1 + 1.9999F);
 312     if ( area && nr_rect_l_test_intersect(area, &shape->approx_bbox) ) shape->delayed_shp=false;
 313
 314     /* Release state data */
 315     if (TRUE || !NR::transform_equalp(gc->transform, shape->ctm, NR_EPSILON)) {
 316         /* Concept test */
 317         if (shape->fill_shp) {
 318             delete shape->fill_shp;
 319             shape->fill_shp = NULL;
 320         }
 321     }
 322     if (shape->stroke_shp) {
 323         delete shape->stroke_shp;
 324         shape->stroke_shp = NULL;
 325     }
 326     if (shape->fill_painter) {
 327         sp_painter_free(shape->fill_painter);
 328         shape->fill_painter = NULL;
 329     }
 330     if (shape->stroke_painter) {
 331         sp_painter_free(shape->stroke_painter);
 332         shape->stroke_painter = NULL;
 333     }
 334
 335     if (!shape->curve ||
 336         !shape->style ||
 337         shape->curve->is_empty() ||
 338         (( shape->_fill.paint.type() == NRArenaShape::Paint::NONE ) &&
 339          ( shape->_stroke.paint.type() == NRArenaShape::Paint::NONE && !outline) ))
 340     {
 341         item->bbox = shape->approx_bbox;
 342         return NR_ARENA_ITEM_STATE_ALL;
 343     }
 344
 345     /* Build state data */
 346     if ( shape->delayed_shp ) {
 347         item->bbox=shape->approx_bbox;
 348     } else {
 349         nr_arena_shape_update_stroke(shape, gc, area);
 350         nr_arena_shape_update_fill(shape, gc, area);
 351
 352         bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0.0;
 353         nr_arena_shape_add_bboxes(shape,bbox);
 354
 355         shape->approx_bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 356         shape->approx_bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 357         shape->approx_bbox.x1 = (gint32)(bbox.x1 + 1.9999F);
 358         shape->approx_bbox.y1 = (gint32)(bbox.y1 + 1.9999F);
 359     }
 360
 361     if (nr_rect_d_test_empty(&bbox)) return NR_ARENA_ITEM_STATE_ALL;
 362
 363     item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 364     item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 365     item->bbox.x1 = (gint32)(bbox.x1 + 1.0F);
 366     item->bbox.y1 = (gint32)(bbox.y1 + 1.0F);
 367     nr_arena_request_render_rect(item->arena, &item->bbox);
 368
 369     item->render_opacity = TRUE;
 370     if ( shape->_fill.paint.type() == NRArenaShape::Paint::SERVER ) {
 371         if (gc && gc->parent) {
 372             shape->fill_painter = sp_paint_server_painter_new(shape->_fill.paint.server(),
 373                                                               gc->transform, gc->parent->transform,
 374                                                               &shape->paintbox);
 375         }
 376         item->render_opacity = FALSE;
 377     }
 378     if ( shape->_stroke.paint.type() == NRArenaShape::Paint::SERVER ) {
 379         if (gc && gc->parent) {
 380             shape->stroke_painter = sp_paint_server_painter_new(shape->_stroke.paint.server(),
 381                                                                 gc->transform, gc->parent->transform,
 382                                                                 &shape->paintbox);
 383         }
 384         item->render_opacity = FALSE;
 385     }
 386     if (  (shape->_fill.paint.type() != NRArenaShape::Paint::NONE &&
 387            shape->_stroke.paint.type() != NRArenaShape::Paint::NONE)
 388           || (shape->markers)
 389         )
 390     {
 391         // don't merge item opacity with paint opacity if there is a stroke on the fill, or markers on stroke
 392         item->render_opacity = FALSE;
 393     }
 394
 395     if (beststate & NR_ARENA_ITEM_STATE_BBOX) {
 396         for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 397             nr_rect_l_union(&item->bbox, &item->bbox, &child->bbox);
 398         }
 399     }
 400
 401     return NR_ARENA_ITEM_STATE_ALL;
 402 }
 403
 404 int matrix_is_isometry(NR::Matrix p) {
 405     NR::Matrix   tp;
 406     // transposition
 407     tp[0]=p[0];
 408     tp[1]=p[2];
 409     tp[2]=p[1];
 410     tp[3]=p[3];
 411     for (int i = 4; i < 6; i++) // shut valgrind up :)
 412         tp[i] = p[i] = 0;
 413     NR::Matrix   isom = tp*p; // A^T * A = adjunct?
 414     // Is the adjunct nearly an identity function?
 415     if (isom.is_translation(0.01)) {
 416         // the transformation is an isometry -> no need to recompute
 417         // the uncrossed polygon
 418         if ( p.det() < 0 )
 419             return -1;
 420         else
 421             return 1;
 422     }
 423     return 0;
 424 }
 425
 426 static bool is_inner_area(NRRectL const &outer, NRRectL const &inner) {
 427     return (outer.x0 <= inner.x0 && outer.y0 <= inner.y0 && outer.x1 >= inner.x1 && outer.y1 >= inner.y1);
 428 }
 429
 430 /** force_shape is used for clipping paths, when we need the shape for clipping even if it's not filled */
 431 void
 432 nr_arena_shape_update_fill(NRArenaShape *shape, NRGC *gc, NRRectL *area, bool force_shape)
 433 {
 434     if ((shape->_fill.paint.type() != NRArenaShape::Paint::NONE || force_shape) &&
 435         ((shape->curve->_end > 2) || (SP_CURVE_BPATH(shape->curve)[1].code == NR_CURVETO)) ) {
 436         if (TRUE || !shape->fill_shp) {
 437             NR::Matrix  cached_to_new = NR::identity();
 438             int isometry = 0;
 439             if ( shape->cached_fill ) {
 440                 if (shape->cached_fctm == gc->transform) {
 441                     isometry = 2; // identity
 442                 } else {
 443                     cached_to_new = shape->cached_fctm.inverse() * gc->transform;
 444                     isometry = matrix_is_isometry(cached_to_new);
 445                 }
 446                 if (0 != isometry && !is_inner_area(shape->cached_farea, *area))
 447                     isometry = 0;
 448             }
 449             if ( isometry == 0 ) {
 450                 if ( shape->cached_fill == NULL ) shape->cached_fill=new Shape;
 451                 shape->cached_fill->Reset();
 452
 453                 Path*  thePath=new Path;
 454                 Shape* theShape=new Shape;
 455                 {
 456                     NR::Matrix   tempMat(gc->transform);
 457                     thePath->LoadArtBPath(SP_CURVE_BPATH(shape->curve),tempMat,true);
 458                 }
 459
 460                 if (is_inner_area(*area, NR_ARENA_ITEM(shape)->bbox)) {
 461                     thePath->Convert(1.0);
 462                     shape->cached_fpartialy = false;
 463                 } else {
 464                     thePath->Convert(area, 1.0);
 465                     shape->cached_fpartialy = true;
 466                 }
 467
 468                 thePath->Fill(theShape, 0);
 469
 470                 if ( shape->_fill.rule == NRArenaShape::EVEN_ODD ) {
 471                     shape->cached_fill->ConvertToShape(theShape, fill_oddEven);
 472                     // alternatively, this speeds up rendering of oddeven shapes but disables AA :(
 473                     //shape->cached_fill->Copy(theShape);
 474                 } else {
 475                     shape->cached_fill->ConvertToShape(theShape, fill_nonZero);
 476                 }
 477                 shape->cached_fctm=gc->transform;
 478                 shape->cached_farea = *area;
 479                 delete theShape;
 480                 delete thePath;
 481                 if ( shape->fill_shp == NULL )
 482                     shape->fill_shp = new Shape;
 483
 484                 shape->fill_shp->Copy(shape->cached_fill);
 485
 486             } else if ( 2 == isometry ) {
 487                 if ( shape->fill_shp == NULL ) {
 488                     shape->fill_shp = new Shape;
 489                     shape->fill_shp->Copy(shape->cached_fill);
 490                 }
 491             } else {
 492
 493                 if ( shape->fill_shp == NULL )
 494                     shape->fill_shp = new Shape;
 495
 496                 shape->fill_shp->Reset(shape->cached_fill->numberOfPoints(),
 497                                        shape->cached_fill->numberOfEdges());
 498                 for (int i = 0; i < shape->cached_fill->numberOfPoints(); i++)
 499                     shape->fill_shp->AddPoint(shape->cached_fill->getPoint(i).x * cached_to_new);
 500                 if ( isometry == 1 ) {
 501                     for (int i = 0; i < shape->cached_fill->numberOfEdges(); i++)
 502                         shape->fill_shp->AddEdge(shape->cached_fill->getEdge(i).st,
 503                                                  shape->cached_fill->getEdge(i).en);
 504                 } else if ( isometry == -1 ) { // need to flip poly.
 505                     for (int i = 0; i < shape->cached_fill->numberOfEdges(); i++)
 506                         shape->fill_shp->AddEdge(shape->cached_fill->getEdge(i).en,
 507                                                  shape->cached_fill->getEdge(i).st);
 508                 }
 509                 shape->fill_shp->ForceToPolygon();
 510                 shape->fill_shp->needPointsSorting();
 511                 shape->fill_shp->needEdgesSorting();
 512             }
 513             shape->delayed_shp |= shape->cached_fpartialy;
 514         }
 515     }
 516 }
 517
 518 void
 519 nr_arena_shape_update_stroke(NRArenaShape *shape,NRGC* gc, NRRectL *area)
 520 {
 521     SPStyle* style = shape->style;
 522
 523     float const scale = NR::expansion(gc->transform);
 524
 525     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
 526
 527     if (outline) {
 528         // cairo does not need the livarot path for rendering
 529         return;
 530     }
 531
 532     // after switching normal stroke rendering to cairo too, optimize this: lower tolerance, disregard dashes
 533     // (since it will only be used for picking, not for rendering)
 534
 535     if (outline ||
 536         ((shape->_stroke.paint.type() != NRArenaShape::Paint::NONE) &&
 537          ( fabs(shape->_stroke.width * scale) > 0.01 ))) { // sinon c'est 0=oon veut pas de bord
 538
 539         float style_width = MAX(0.125, shape->_stroke.width * scale);
 540         float width;
 541         if (outline) {
 542             width = 0.5; // 1 pixel wide, independent of zoom
 543         } else {
 544             width = style_width;
 545         }
 546
 547         NR::Matrix  cached_to_new = NR::identity();
 548
 549         int isometry = 0;
 550         if ( shape->cached_stroke ) {
 551             if (shape->cached_sctm == gc->transform) {
 552                 isometry = 2; // identity
 553             } else {
 554                 cached_to_new = shape->cached_sctm.inverse() * gc->transform;
 555                 isometry = matrix_is_isometry(cached_to_new);
 556             }
 557             if (0 != isometry && !is_inner_area(shape->cached_sarea, *area))
 558                 isometry = 0;
 559             if (0 != isometry && width != shape->cached_width) {
 560                 // if this happens without setting style, we have just switched to outline or back
 561                 isometry = 0;
 562             }
 563         }
 564
 565         if ( isometry == 0 ) {
 566             if ( shape->cached_stroke == NULL ) shape->cached_stroke=new Shape;
 567             shape->cached_stroke->Reset();
 568             Path*  thePath = new Path;
 569             Shape* theShape = new Shape;
 570             {
 571                 NR::Matrix   tempMat(gc->transform);
 572                 thePath->LoadArtBPath(SP_CURVE_BPATH(shape->curve), tempMat, true);
 573             }
 574
 575             // add some padding to the rendering area, so clipped path does not go into a render area
 576             NRRectL padded_area = *area;
 577             padded_area.x0 -= (NR::ICoord)width;
 578             padded_area.x1 += (NR::ICoord)width;
 579             padded_area.y0 -= (NR::ICoord)width;
 580             padded_area.y1 += (NR::ICoord)width;
 581             if ((style->stroke_dash.n_dash && !outline) || is_inner_area(padded_area, NR_ARENA_ITEM(shape)->bbox)) {
 582                 thePath->Convert((outline) ? 4.0 : 1.0);
 583                 shape->cached_spartialy = false;
 584             }
 585             else {
 586                 thePath->Convert(&padded_area, (outline) ? 4.0 : 1.0);
 587                 shape->cached_spartialy = true;
 588             }
 589
 590             if (style->stroke_dash.n_dash && !outline) {
 591                 thePath->DashPolylineFromStyle(style, scale, 1.0);
 592             }
 593
 594             ButtType butt=butt_straight;
 595             switch (shape->_stroke.cap) {
 596                 case NRArenaShape::BUTT_CAP:
 597                     butt = butt_straight;
 598                     break;
 599                 case NRArenaShape::ROUND_CAP:
 600                     butt = butt_round;
 601                     break;
 602                 case NRArenaShape::SQUARE_CAP:
 603                     butt = butt_square;
 604                     break;
 605             }
 606             JoinType join=join_straight;
 607             switch (shape->_stroke.join) {
 608                 case NRArenaShape::MITRE_JOIN:
 609                     join = join_pointy;
 610                     break;
 611                 case NRArenaShape::ROUND_JOIN:
 612                     join = join_round;
 613                     break;
 614                 case NRArenaShape::BEVEL_JOIN:
 615                     join = join_straight;
 616                     break;
 617             }
 618
 619             if (outline) {
 620                 butt = butt_straight;
 621                 join = join_straight;
 622             }
 623
 624             thePath->Stroke(theShape, false, 0.5*width, join, butt,
 625                             0.5*width*shape->_stroke.mitre_limit);
 626
 627
 628             if (outline) {
 629                 // speeds it up, but uses evenodd for the stroke shape (which does not matter for 1-pixel wide outline)
 630                 shape->cached_stroke->Copy(theShape);
 631             } else {
 632                 shape->cached_stroke->ConvertToShape(theShape, fill_nonZero);
 633             }
 634
 635             shape->cached_width = width;
 636
 637             shape->cached_sctm=gc->transform;
 638             shape->cached_sarea = *area;
 639             delete thePath;
 640             delete theShape;
 641             if ( shape->stroke_shp == NULL ) shape->stroke_shp=new Shape;
 642
 643             shape->stroke_shp->Copy(shape->cached_stroke);
 644
 645         } else if ( 2 == isometry ) {
 646             if ( shape->stroke_shp == NULL ) {
 647                 shape->stroke_shp=new Shape;
 648                 shape->stroke_shp->Copy(shape->cached_stroke);
 649             }
 650         } else {
 651             if ( shape->stroke_shp == NULL )
 652                 shape->stroke_shp=new Shape;
 653             shape->stroke_shp->Reset(shape->cached_stroke->numberOfPoints(), shape->cached_stroke->numberOfEdges());
 654             for (int i = 0; i < shape->cached_stroke->numberOfPoints(); i++)
 655                 shape->stroke_shp->AddPoint(shape->cached_stroke->getPoint(i).x * cached_to_new);
 656             if ( isometry == 1 ) {
 657                 for (int i = 0; i < shape->cached_stroke->numberOfEdges(); i++)
 658                     shape->stroke_shp->AddEdge(shape->cached_stroke->getEdge(i).st,
 659                                                shape->cached_stroke->getEdge(i).en);
 660             } else if ( isometry == -1 ) {
 661                 for (int i = 0; i < shape->cached_stroke->numberOfEdges(); i++)
 662                     shape->stroke_shp->AddEdge(shape->cached_stroke->getEdge(i).en,
 663                                                shape->cached_stroke->getEdge(i).st);
 664             }
 665             shape->stroke_shp->ForceToPolygon();
 666             shape->stroke_shp->needPointsSorting();
 667             shape->stroke_shp->needEdgesSorting();
 668         }
 669         shape->delayed_shp |= shape->cached_spartialy;
 670     }
 671 }
 672
 673
 674 void
 675 nr_arena_shape_add_bboxes(NRArenaShape* shape, NRRect &bbox)
 676 {
 677     if ( shape->stroke_shp ) {
 678         shape->stroke_shp->CalcBBox();
 679         shape->stroke_shp->leftX=floor(shape->stroke_shp->leftX);
 680         shape->stroke_shp->rightX=ceil(shape->stroke_shp->rightX);
 681         shape->stroke_shp->topY=floor(shape->stroke_shp->topY);
 682         shape->stroke_shp->bottomY=ceil(shape->stroke_shp->bottomY);
 683         if ( bbox.x0 >= bbox.x1 ) {
 684             if ( shape->stroke_shp->leftX < shape->stroke_shp->rightX ) {
 685                 bbox.x0=shape->stroke_shp->leftX;
 686                 bbox.x1=shape->stroke_shp->rightX;
 687             }
 688         } else {
 689             if ( shape->stroke_shp->leftX < bbox.x0 )
 690                 bbox.x0=shape->stroke_shp->leftX;
 691             if ( shape->stroke_shp->rightX > bbox.x1 )
 692                 bbox.x1=shape->stroke_shp->rightX;
 693         }
 694         if ( bbox.y0 >= bbox.y1 ) {
 695             if ( shape->stroke_shp->topY < shape->stroke_shp->bottomY ) {
 696                 bbox.y0=shape->stroke_shp->topY;
 697                 bbox.y1=shape->stroke_shp->bottomY;
 698             }
 699         } else {
 700             if ( shape->stroke_shp->topY < bbox.y0 )
 701                 bbox.y0=shape->stroke_shp->topY;
 702             if ( shape->stroke_shp->bottomY > bbox.y1 )
 703                 bbox.y1=shape->stroke_shp->bottomY;
 704         }
 705     }
 706     if ( shape->fill_shp ) {
 707         shape->fill_shp->CalcBBox();
 708         shape->fill_shp->leftX=floor(shape->fill_shp->leftX);
 709         shape->fill_shp->rightX=ceil(shape->fill_shp->rightX);
 710         shape->fill_shp->topY=floor(shape->fill_shp->topY);
 711         shape->fill_shp->bottomY=ceil(shape->fill_shp->bottomY);
 712         if ( bbox.x0 >= bbox.x1 ) {
 713             if ( shape->fill_shp->leftX < shape->fill_shp->rightX ) {
 714                 bbox.x0=shape->fill_shp->leftX;
 715                 bbox.x1=shape->fill_shp->rightX;
 716             }
 717         } else {
 718             if ( shape->fill_shp->leftX < bbox.x0 ) bbox.x0=shape->fill_shp->leftX;
 719             if ( shape->fill_shp->rightX > bbox.x1 ) bbox.x1=shape->fill_shp->rightX;
 720         }
 721         if ( bbox.y0 >= bbox.y1 ) {
 722             if ( shape->fill_shp->topY < shape->fill_shp->bottomY ) {
 723                 bbox.y0=shape->fill_shp->topY;
 724                 bbox.y1=shape->fill_shp->bottomY;
 725             }
 726         } else {
 727             if ( shape->fill_shp->topY < bbox.y0 ) bbox.y0=shape->fill_shp->topY;
 728             if ( shape->fill_shp->bottomY > bbox.y1 ) bbox.y1=shape->fill_shp->bottomY;
 729         }
 730     }
 731 }
 732
 733 // cairo outline rendering:
 734 static unsigned int
 735 cairo_arena_shape_render_outline(cairo_t *ct, NRArenaItem *item, NR::Maybe<NR::Rect> area)
 736 {
 737     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 738
 739     if (!ct)
 740         return item->state;
 741
 742     guint32 rgba = NR_ARENA_ITEM(shape)->arena->outlinecolor;
 743     // FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat
 744     // by setting color channels in the "wrong" order
 745     cairo_set_source_rgba(ct, SP_RGBA32_B_F(rgba), SP_RGBA32_G_F(rgba), SP_RGBA32_R_F(rgba), SP_RGBA32_A_F(rgba));
 746
 747     cairo_set_line_width(ct, 0.5);
 748     cairo_set_tolerance(ct, 1.25); // low quality, but good enough for outline mode
 749     cairo_new_path(ct);
 750
 751     feed_curve_to_cairo (ct, SP_CURVE_BPATH(shape->curve), NR::Matrix(shape->ctm), area, true, 0);
 752
 753     cairo_stroke(ct);
 754
 755     return item->state;
 756 }
 757
 758 // cairo stroke rendering (flat color only so far!):
 759 // works on canvas, but wrongs the colors in nonpremul buffers: icons and png export
 760 // (need to switch them to premul before this can be enabled)
 761 void
 762 cairo_arena_shape_render_stroke(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 763 {
 764     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 765     SPStyle const *style = shape->style;
 766
 767     float const scale = NR::expansion(shape->ctm);
 768
 769     if (fabs(shape->_stroke.width * scale) < 0.01)
 770         return;
 771
 772     cairo_t *ct = nr_create_cairo_context (area, pb);
 773
 774     if (!ct)
 775         return;
 776
 777     guint32 rgba;
 778     if ( item->render_opacity ) {
 779         rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity *
 780                                                       SP_SCALE24_TO_FLOAT(style->opacity.value) );
 781     } else {
 782         rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity );
 783     }
 784
 785     // FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat
 786     // by setting color channels in the "wrong" order
 787     cairo_set_source_rgba(ct, SP_RGBA32_B_F(rgba), SP_RGBA32_G_F(rgba), SP_RGBA32_R_F(rgba), SP_RGBA32_A_F(rgba));
 788
 789     float style_width = MAX(0.125, shape->_stroke.width * scale);
 790     cairo_set_line_width(ct, style_width);
 791
 792     switch (shape->_stroke.cap) {
 793         case NRArenaShape::BUTT_CAP:
 794             cairo_set_line_cap(ct, CAIRO_LINE_CAP_BUTT);
 795             break;
 796         case NRArenaShape::ROUND_CAP:
 797             cairo_set_line_cap(ct, CAIRO_LINE_CAP_ROUND);
 798             break;
 799         case NRArenaShape::SQUARE_CAP:
 800             cairo_set_line_cap(ct, CAIRO_LINE_CAP_SQUARE);
 801             break;
 802     }
 803     switch (shape->_stroke.join) {
 804         case NRArenaShape::MITRE_JOIN:
 805             cairo_set_line_join(ct, CAIRO_LINE_JOIN_MITER);
 806             break;
 807         case NRArenaShape::ROUND_JOIN:
 808             cairo_set_line_join(ct, CAIRO_LINE_JOIN_ROUND);
 809             break;
 810         case NRArenaShape::BEVEL_JOIN:
 811             cairo_set_line_join(ct, CAIRO_LINE_JOIN_BEVEL);
 812             break;
 813     }
 814
 815     cairo_set_miter_limit (ct, style->stroke_miterlimit.value);
 816
 817     if (style->stroke_dash.n_dash) {
 818         NRVpathDash dash;
 819         dash.offset = style->stroke_dash.offset * scale;
 820         dash.n_dash = style->stroke_dash.n_dash;
 821         dash.dash = g_new(double, dash.n_dash);
 822         for (int i = 0; i < dash.n_dash; i++) {
 823             dash.dash[i] = style->stroke_dash.dash[i] * scale;
 824         }
 825         cairo_set_dash (ct, dash.dash, dash.n_dash, dash.offset);
 826         g_free(dash.dash);
 827     }
 828
 829     cairo_set_tolerance(ct, 0.1);
 830     cairo_new_path(ct);
 831
 832     feed_curve_to_cairo (ct, SP_CURVE_BPATH(shape->curve), NR::Matrix(shape->ctm), area->upgrade(), true, style_width);
 833
 834     cairo_stroke(ct);
 835
 836     cairo_surface_t *cst = cairo_get_target(ct);
 837     cairo_destroy (ct);
 838     cairo_surface_finish (cst);
 839     cairo_surface_destroy (cst);
 840
 841     pb->empty = FALSE;
 842 }
 843
 844
 845 /**
 846  * Renders the item.  Markers are just composed into the parent buffer.
 847  */
 848 static unsigned int
 849 nr_arena_shape_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags)
 850 {
 851     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 852
 853     if (!shape->curve) return item->state;
 854     if (!shape->style) return item->state;
 855
 856     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
 857
 858     if (outline) { // cairo outline rendering
 859
 860         pb->empty = FALSE;
 861         unsigned int ret = cairo_arena_shape_render_outline (ct, item, (&pb->area)->upgrade());
 862         if (ret & NR_ARENA_ITEM_STATE_INVALID) return ret;
 863
 864     } else {
 865
 866     if ( shape->delayed_shp ) {
 867         if ( nr_rect_l_test_intersect(area, &item->bbox) ) {
 868             NRGC   tempGC(NULL);
 869             tempGC.transform=shape->ctm;
 870             shape->delayed_shp = false;
 871             nr_arena_shape_update_stroke(shape,&tempGC,&pb->visible_area);
 872             nr_arena_shape_update_fill(shape,&tempGC,&pb->visible_area);
 873 /*      NRRect bbox;
 874         bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0.0;
 875         nr_arena_shape_add_bboxes(shape,bbox);
 876         item->bbox.x0 = (gint32)(bbox.x0 - 1.0F);
 877         item->bbox.y0 = (gint32)(bbox.y0 - 1.0F);
 878         item->bbox.x1 = (gint32)(bbox.x1 + 1.0F);
 879         item->bbox.y1 = (gint32)(bbox.y1 + 1.0F);
 880         shape->approx_bbox=item->bbox;*/
 881         } else {
 882             return item->state;
 883         }
 884     }
 885
 886     SPStyle const *style = shape->style;
 887     if (shape->fill_shp) {
 888         NRPixBlock m;
 889         guint32 rgba;
 890
 891         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 892
 893         // if memory allocation failed, abort render
 894         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 895             nr_pixblock_release (&m);
 896             return (item->state);
 897         }
 898
 899         m.visible_area = pb->visible_area;
 900         nr_pixblock_render_shape_mask_or(m,shape->fill_shp);
 901         m.empty = FALSE;
 902
 903         if (shape->_fill.paint.type() == NRArenaShape::Paint::NONE) {
 904             // do not render fill in any way
 905         } else if (shape->_fill.paint.type() == NRArenaShape::Paint::COLOR) {
 906             if ( item->render_opacity ) {
 907                 rgba = shape->_fill.paint.color().toRGBA32( shape->_fill.opacity *
 908                                                             SP_SCALE24_TO_FLOAT(style->opacity.value) );
 909             } else {
 910                 rgba = shape->_fill.paint.color().toRGBA32( shape->_fill.opacity );
 911             }
 912             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 913             pb->empty = FALSE;
 914         } else if (shape->_fill.paint.type() == NRArenaShape::Paint::SERVER) {
 915             if (shape->fill_painter) {
 916                 nr_arena_render_paintserver_fill(pb, area, shape->fill_painter, shape->_fill.opacity, &m);
 917             }
 918         }
 919
 920         nr_pixblock_release(&m);
 921     }
 922
 923     if (shape->stroke_shp && shape->_stroke.paint.type() == NRArenaShape::Paint::COLOR) {
 924
 925         // cairo_arena_shape_render_stroke(item, area, pb);
 926
 927         guint32 rgba;
 928         NRPixBlock m;
 929
 930         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 931
 932         // if memory allocation failed, abort render
 933         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 934             nr_pixblock_release (&m);
 935             return (item->state);
 936         }
 937
 938         m.visible_area = pb->visible_area;
 939         nr_pixblock_render_shape_mask_or(m, shape->stroke_shp);
 940         m.empty = FALSE;
 941
 942             if ( item->render_opacity ) {
 943                 rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity *
 944                                                               SP_SCALE24_TO_FLOAT(style->opacity.value) );
 945             } else {
 946                 rgba = shape->_stroke.paint.color().toRGBA32( shape->_stroke.opacity );
 947             }
 948             nr_blit_pixblock_mask_rgba32(pb, &m, rgba);
 949             pb->empty = FALSE;
 950
 951         nr_pixblock_release(&m);
 952
 953     } else if (shape->stroke_shp && shape->_stroke.paint.type() == NRArenaShape::Paint::SERVER) {
 954
 955         NRPixBlock m;
 956
 957         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
 958
 959         // if memory allocation failed, abort render
 960         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
 961             nr_pixblock_release (&m);
 962             return (item->state);
 963         }
 964
 965         m.visible_area = pb->visible_area;
 966         nr_pixblock_render_shape_mask_or(m, shape->stroke_shp);
 967         m.empty = FALSE;
 968
 969         if (shape->stroke_painter) {
 970             nr_arena_render_paintserver_fill(pb, area, shape->stroke_painter, shape->_stroke.opacity, &m);
 971         }
 972
 973         nr_pixblock_release(&m);
 974     }
 975
 976     } // non-cairo non-outline branch
 977
 978     /* Render markers into parent buffer */
 979     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
 980         unsigned int ret = nr_arena_item_invoke_render(ct, child, area, pb, flags);
 981         if (ret & NR_ARENA_ITEM_STATE_INVALID) return ret;
 982     }
 983
 984     return item->state;
 985 }
 986
 987
 988 // cairo clipping: this basically works except for the stride-must-be-divisible-by-4 cairo bug;
 989 // reenable this when the bug is fixed and remove the rest of this function
 990 // TODO
 991 #if defined(DEADCODE) && !defined(DEADCODE)
 992 static guint
 993 cairo_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
 994 {
 995     NRArenaShape *shape = NR_ARENA_SHAPE(item);
 996     if (!shape->curve) return item->state;
 997
 998         cairo_t *ct = nr_create_cairo_context (area, pb);
 999
1000         if (!ct)
1001             return item->state;
1002
1003         cairo_set_source_rgba(ct, 0, 0, 0, 1);
1004
1005         cairo_new_path(ct);
1006
1007         feed_curve_to_cairo (ct, SP_CURVE_BPATH(shape->curve), NR::Matrix(shape->ctm), (area)->upgrade(), false, 0);
1008
1009         cairo_fill(ct);
1010
1011         cairo_surface_t *cst = cairo_get_target(ct);
1012         cairo_destroy (ct);
1013         cairo_surface_finish (cst);
1014         cairo_surface_destroy (cst);
1015
1016         pb->empty = FALSE;
1017
1018         return item->state;
1019 }
1020 #endif //defined(DEADCODE) && !defined(DEADCODE)
1021
1022
1023 static guint
1024 nr_arena_shape_clip(NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
1025 {
1026     //return cairo_arena_shape_clip(item, area, pb);
1027
1028     NRArenaShape *shape = NR_ARENA_SHAPE(item);
1029     if (!shape->curve) return item->state;
1030
1031     if ( shape->delayed_shp || shape->fill_shp == NULL) { // we need a fill shape no matter what
1032         if ( nr_rect_l_test_intersect(area, &item->bbox) ) {
1033             NRGC   tempGC(NULL);
1034             tempGC.transform=shape->ctm;
1035             shape->delayed_shp = false;
1036             nr_arena_shape_update_fill(shape, &tempGC, &pb->visible_area, true);
1037         } else {
1038             return item->state;
1039         }
1040     }
1041
1042     if ( shape->fill_shp ) {
1043         NRPixBlock m;
1044
1045         /* fixme: We can OR in one step (Lauris) */
1046         nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, area->x0, area->y0, area->x1, area->y1, TRUE);
1047
1048         // if memory allocation failed, abort
1049         if (m.size != NR_PIXBLOCK_SIZE_TINY && m.data.px == NULL) {
1050             nr_pixblock_release (&m);
1051             return (item->state);
1052         }
1053
1054         m.visible_area = pb->visible_area;
1055         nr_pixblock_render_shape_mask_or(m,shape->fill_shp);
1056
1057         for (int y = area->y0; y < area->y1; y++) {
1058             unsigned char *s, *d;
1059             s = NR_PIXBLOCK_PX(&m) + (y - area->y0) * m.rs;
1060             d = NR_PIXBLOCK_PX(pb) + (y - area->y0) * pb->rs;
1061             for (int x = area->x0; x < area->x1; x++) {
1062                 *d = NR_COMPOSEA_111(*s, *d);
1063                 d ++;
1064                 s ++;
1065             }
1066         }
1067         nr_pixblock_release(&m);
1068         pb->empty = FALSE;
1069     }
1070
1071     return item->state;
1072 }
1073
1074 static NRArenaItem *
1075 nr_arena_shape_pick(NRArenaItem *item, NR::Point p, double delta, unsigned int /*sticky*/)
1076 {
1077     NRArenaShape *shape = NR_ARENA_SHAPE(item);
1078
1079     if (shape->repick_after > 0)
1080         shape->repick_after--;
1081
1082     if (shape->repick_after > 0) // we are a slow, huge path. skip this pick, returning what was returned last time
1083         return shape->last_pick;
1084
1085     if (!shape->curve) return NULL;
1086     if (!shape->style) return NULL;
1087     if (SP_SCALE24_TO_FLOAT(shape->style->opacity.value) == 0) // fully transparent, no pick
1088         return NULL;
1089
1090     GTimeVal tstart, tfinish;
1091     g_get_current_time (&tstart);
1092
1093     bool outline = (NR_ARENA_ITEM(shape)->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
1094
1095     double width;
1096     if (outline) {
1097         width = 0.5;
1098     } else if (shape->_stroke.paint.type() != NRArenaShape::Paint::NONE && shape->_stroke.opacity > 1e-3) {
1099         float const scale = NR::expansion(shape->ctm);
1100         width = MAX(0.125, shape->_stroke.width * scale) / 2;
1101     } else {
1102         width = 0;
1103     }
1104
1105     NRBPath bp;
1106     bp.path = SP_CURVE_BPATH(shape->curve);
1107     double dist = NR_HUGE;
1108     int wind = 0;
1109     bool needfill = (shape->_fill.paint.type() != NRArenaShape::Paint::NONE
1110              && shape->_fill.opacity > 1e-3 && !outline);
1111
1112     if (item->arena->canvasarena) {
1113         NR::Rect viewbox = item->arena->canvasarena->item.canvas->getViewbox();
1114         viewbox.growBy (width);
1115         nr_path_matrix_point_bbox_wind_distance(&bp, shape->ctm, p, NULL, needfill? &wind : NULL, &dist, 0.5, &viewbox);
1116     } else {
1117         nr_path_matrix_point_bbox_wind_distance(&bp, shape->ctm, p, NULL, needfill? &wind : NULL, &dist, 0.5, NULL);
1118     }
1119
1120     g_get_current_time (&tfinish);
1121     glong this_pick = (tfinish.tv_sec - tstart.tv_sec) * 1000000 + (tfinish.tv_usec - tstart.tv_usec);
1122     //g_print ("pick time %lu\n", this_pick);
1123
1124     if (this_pick > 10000) { // slow picking, remember to skip several new picks
1125         shape->repick_after = this_pick / 5000;
1126     }
1127
1128     // covered by fill?
1129     if (needfill) {
1130         if (!shape->style->fill_rule.computed) {
1131             if (wind != 0) {
1132                 shape->last_pick = item;
1133                 return item;
1134             }
1135         } else {
1136             if (wind & 0x1) {
1137                 shape->last_pick = item;
1138                 return item;
1139             }
1140         }
1141     }
1142
1143     // close to the edge, as defined by strokewidth and delta?
1144     // this ignores dashing (as if the stroke is solid) and always works as if caps are round
1145     if (needfill || width > 0) { // if either fill or stroke visible,
1146         if ((dist - width) < delta) {
1147             shape->last_pick = item;
1148             return item;
1149         }
1150     }
1151
1152     // if not picked on the shape itself, try its markers
1153     for (NRArenaItem *child = shape->markers; child != NULL; child = child->next) {
1154         NRArenaItem *ret = nr_arena_item_invoke_pick(child, p, delta, 0);
1155         if (ret) {
1156             shape->last_pick = item;
1157             return item;
1158         }
1159     }
1160
1161     shape->last_pick = NULL;
1162     return NULL;
1163 }
1164
1165 /**
1166  *
1167  *  Requests a render of the shape, then if the shape is already a curve it
1168  *  unrefs the old curve; if the new curve is valid it creates a copy of the
1169  *  curve and adds it to the shape.  Finally, it requests an update of the
1170  *  arena for the shape.
1171  */
1172 void nr_arena_shape_set_path(NRArenaShape *shape, SPCurve *curve,bool justTrans)
1173 {
1174     g_return_if_fail(shape != NULL);
1175     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1176
1177     if ( justTrans == false ) {
1178         // dirty cached versions
1179         if ( shape->cached_fill ) {
1180             delete shape->cached_fill;
1181             shape->cached_fill=NULL;
1182         }
1183         if ( shape->cached_stroke ) {
1184             delete shape->cached_stroke;
1185             shape->cached_stroke=NULL;
1186         }
1187     }
1188
1189     nr_arena_item_request_render(NR_ARENA_ITEM(shape));
1190
1191     if (shape->curve) {
1192         shape->curve->unref();
1193         shape->curve = NULL;
1194     }
1195
1196     if (curve) {
1197         shape->curve = curve;
1198         curve->ref();
1199     }
1200
1201     nr_arena_item_request_update(NR_ARENA_ITEM(shape), NR_ARENA_ITEM_STATE_ALL, FALSE);
1202 }
1203
1204 void NRArenaShape::setFill(SPPaintServer *server) {
1205     _fill.paint.set(server);
1206     _invalidateCachedFill();
1207 }
1208
1209 void NRArenaShape::setFill(SPColor const &color) {
1210     _fill.paint.set(color);
1211     _invalidateCachedFill();
1212 }
1213
1214 void NRArenaShape::setFillOpacity(double opacity) {
1215     _fill.opacity = opacity;
1216     _invalidateCachedFill();
1217 }
1218
1219 void NRArenaShape::setFillRule(NRArenaShape::FillRule rule) {
1220     _fill.rule = rule;
1221     _invalidateCachedFill();
1222 }
1223
1224 void NRArenaShape::setStroke(SPPaintServer *server) {
1225     _stroke.paint.set(server);
1226     _invalidateCachedStroke();
1227 }
1228
1229 void NRArenaShape::setStroke(SPColor const &color) {
1230     _stroke.paint.set(color);
1231     _invalidateCachedStroke();
1232 }
1233
1234 void NRArenaShape::setStrokeOpacity(double opacity) {
1235     _stroke.opacity = opacity;
1236     _invalidateCachedStroke();
1237 }
1238
1239 void NRArenaShape::setStrokeWidth(double width) {
1240     _stroke.width = width;
1241     _invalidateCachedStroke();
1242 }
1243
1244 void NRArenaShape::setMitreLimit(double limit) {
1245     _stroke.mitre_limit = limit;
1246     _invalidateCachedStroke();
1247 }
1248
1249 void NRArenaShape::setLineCap(NRArenaShape::CapType cap) {
1250     _stroke.cap = cap;
1251     _invalidateCachedStroke();
1252 }
1253
1254 void NRArenaShape::setLineJoin(NRArenaShape::JoinType join) {
1255     _stroke.join = join;
1256     _invalidateCachedStroke();
1257 }
1258
1259 /** nr_arena_shape_set_style
1260  *
1261  * Unrefs any existing style and ref's to the given one, then requests an update of the arena
1262  */
1263 void
1264 nr_arena_shape_set_style(NRArenaShape *shape, SPStyle *style)
1265 {
1266     g_return_if_fail(shape != NULL);
1267     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1268
1269     if (style) sp_style_ref(style);
1270     if (shape->style) sp_style_unref(shape->style);
1271     shape->style = style;
1272
1273     if ( style->fill.isPaintserver() ) {
1274         shape->setFill(style->getFillPaintServer());
1275     } else if ( style->fill.isColor() ) {
1276         shape->setFill(style->fill.value.color);
1277     } else if ( style->fill.isNone() ) {
1278         shape->setFill(NULL);
1279     } else {
1280         g_assert_not_reached();
1281     }
1282     shape->setFillOpacity(SP_SCALE24_TO_FLOAT(style->fill_opacity.value));
1283     switch (style->fill_rule.computed) {
1284         case SP_WIND_RULE_EVENODD: {
1285             shape->setFillRule(NRArenaShape::EVEN_ODD);
1286             break;
1287         }
1288         case SP_WIND_RULE_NONZERO: {
1289             shape->setFillRule(NRArenaShape::NONZERO);
1290             break;
1291         }
1292         default: {
1293             g_assert_not_reached();
1294         }
1295     }
1296
1297     if ( style->stroke.isPaintserver() ) {
1298         shape->setStroke(style->getStrokePaintServer());
1299     } else if ( style->stroke.isColor() ) {
1300         shape->setStroke(style->stroke.value.color);
1301     } else if ( style->stroke.isNone() ) {
1302         shape->setStroke(NULL);
1303     } else {
1304         g_assert_not_reached();
1305     }
1306     shape->setStrokeWidth(style->stroke_width.computed);
1307     shape->setStrokeOpacity(SP_SCALE24_TO_FLOAT(style->stroke_opacity.value));
1308     switch (style->stroke_linecap.computed) {
1309         case SP_STROKE_LINECAP_ROUND: {
1310             shape->setLineCap(NRArenaShape::ROUND_CAP);
1311             break;
1312         }
1313         case SP_STROKE_LINECAP_SQUARE: {
1314             shape->setLineCap(NRArenaShape::SQUARE_CAP);
1315             break;
1316         }
1317         case SP_STROKE_LINECAP_BUTT: {
1318             shape->setLineCap(NRArenaShape::BUTT_CAP);
1319             break;
1320         }
1321         default: {
1322             g_assert_not_reached();
1323         }
1324     }
1325     switch (style->stroke_linejoin.computed) {
1326         case SP_STROKE_LINEJOIN_ROUND: {
1327             shape->setLineJoin(NRArenaShape::ROUND_JOIN);
1328             break;
1329         }
1330         case SP_STROKE_LINEJOIN_BEVEL: {
1331             shape->setLineJoin(NRArenaShape::BEVEL_JOIN);
1332             break;
1333         }
1334         case SP_STROKE_LINEJOIN_MITER: {
1335             shape->setLineJoin(NRArenaShape::MITRE_JOIN);
1336             break;
1337         }
1338         default: {
1339             g_assert_not_reached();
1340         }
1341     }
1342     shape->setMitreLimit(style->stroke_miterlimit.value);
1343
1344     //if shape has a filter
1345     if (style->filter.set && style->getFilter()) {
1346         if (!shape->filter) {
1347             int primitives = sp_filter_primitive_count(SP_FILTER(style->getFilter()));
1348             shape->filter = new NR::Filter(primitives);
1349         }
1350         sp_filter_build_renderer(SP_FILTER(style->getFilter()), shape->filter);
1351     } else {
1352         //no filter set for this shape
1353         delete shape->filter;
1354         shape->filter = NULL;
1355     }
1356
1357     nr_arena_item_request_update(shape, NR_ARENA_ITEM_STATE_ALL, FALSE);
1358 }
1359
1360 void
1361 nr_arena_shape_set_paintbox(NRArenaShape *shape, NRRect const *pbox)
1362 {
1363     g_return_if_fail(shape != NULL);
1364     g_return_if_fail(NR_IS_ARENA_SHAPE(shape));
1365     g_return_if_fail(pbox != NULL);
1366
1367     if ((pbox->x0 < pbox->x1) && (pbox->y0 < pbox->y1)) {
1368         shape->paintbox = *pbox;
1369     } else {
1370         /* fixme: We kill warning, although not sure what to do here (Lauris) */
1371         shape->paintbox.x0 = shape->paintbox.y0 = 0.0F;
1372         shape->paintbox.x1 = shape->paintbox.y1 = 256.0F;
1373     }
1374
1375     nr_arena_item_request_update(shape, NR_ARENA_ITEM_STATE_ALL, FALSE);
1376 }
1377
1378 void NRArenaShape::setPaintBox(NR::Rect const &pbox)
1379 {
1380     paintbox.x0 = pbox.min()[NR::X];
1381     paintbox.y0 = pbox.min()[NR::Y];
1382     paintbox.x1 = pbox.max()[NR::X];
1383     paintbox.y1 = pbox.max()[NR::Y];
1384
1385     nr_arena_item_request_update(this, NR_ARENA_ITEM_STATE_ALL, FALSE);
1386 }
1387
1388 static void
1389 shape_run_A8_OR(raster_info &dest,void */*data*/,int st,float vst,int en,float ven)
1390 {
1391     if ( st >= en ) return;
1392     if ( vst < 0 ) vst=0;
1393     if ( vst > 1 ) vst=1;
1394     if ( ven < 0 ) ven=0;
1395     if ( ven > 1 ) ven=1;
1396     float   sv=vst;
1397     float   dv=ven-vst;
1398     int     len=en-st;
1399     unsigned char*   d=(unsigned char*)dest.buffer;
1400     d+=(st-dest.startPix);
1401     if ( fabs(dv) < 0.001 ) {
1402         if ( vst > 0.999 ) {
1403             /* Simple copy */
1404             while (len > 0) {
1405                 d[0] = 255;
1406                 d += 1;
1407                 len -= 1;
1408             }
1409         } else {
1410             sv*=256;
1411             unsigned int c0_24=(int)sv;
1412             c0_24&=0xFF;
1413             while (len > 0) {
1414                 /* Draw */
1415                 d[0] = NR_COMPOSEA_111(c0_24,d[0]);
1416                 d += 1;
1417                 len -= 1;
1418             }
1419         }
1420     } else {
1421         if ( en <= st+1 ) {
1422             sv=0.5*(vst+ven);
1423             sv*=256;
1424             unsigned int c0_24=(int)sv;
1425             c0_24&=0xFF;
1426             /* Draw */
1427             d[0] = NR_COMPOSEA_111(c0_24,d[0]);
1428         } else {
1429             dv/=len;
1430             sv+=0.5*dv; // correction trapezoidale
1431             sv*=16777216;
1432             dv*=16777216;
1433             int c0_24 = static_cast<int>(CLAMP(sv, 0, 16777216));
1434             int s0_24 = static_cast<int>(dv);
1435             while (len > 0) {
1436                 unsigned int ca;
1437                 /* Draw */
1438                 ca = c0_24 >> 16;
1439                 if ( ca > 255 ) ca=255;
1440                 d[0] = NR_COMPOSEA_111(ca,d[0]);
1441                 d += 1;
1442                 c0_24 += s0_24;
1443                 c0_24 = CLAMP(c0_24, 0, 16777216);
1444                 len -= 1;
1445             }
1446         }
1447     }
1448 }
1449
1450 void nr_pixblock_render_shape_mask_or(NRPixBlock &m,Shape* theS)
1451 {
1452     theS->CalcBBox();
1453     float l = theS->leftX, r = theS->rightX, t = theS->topY, b = theS->bottomY;
1454     int    il,ir,it,ib;
1455     il=(int)floor(l);
1456     ir=(int)ceil(r);
1457     it=(int)floor(t);
1458     ib=(int)ceil(b);
1459
1460     if ( il >= m.area.x1 || ir <= m.area.x0 || it >= m.area.y1 || ib <= m.area.y0 ) return;
1461     if ( il < m.area.x0 ) il=m.area.x0;
1462     if ( it < m.area.y0 ) it=m.area.y0;
1463     if ( ir > m.area.x1 ) ir=m.area.x1;
1464     if ( ib > m.area.y1 ) ib=m.area.y1;
1465
1466     /* This is the FloatLigne version.  See svn (prior to Apr 2006) for versions using BitLigne or direct BitLigne. */
1467     int    curPt;
1468     float  curY;
1469     theS->BeginQuickRaster(curY, curPt);
1470
1471     FloatLigne *theI = new FloatLigne();
1472     IntLigne *theIL = new IntLigne();
1473
1474     theS->DirectQuickScan(curY, curPt, (float) it, true, 1.0);
1475
1476     char *mdata = (char*)m.data.px;
1477     if ( m.size == NR_PIXBLOCK_SIZE_TINY ) mdata=(char*)m.data.p;
1478     uint32_t *ligStart = ((uint32_t*)(mdata + ((il - m.area.x0) + m.rs * (it - m.area.y0))));
1479     for (int y = it; y < ib; y++) {
1480         theI->Reset();
1481         theS->QuickScan(curY, curPt, ((float)(y+1)), theI, 1.0);
1482         theI->Flatten();
1483         theIL->Copy(theI);
1484
1485         raster_info  dest;
1486         dest.startPix=il;
1487         dest.endPix=ir;
1488         dest.sth=il;
1489         dest.stv=y;
1490         dest.buffer=ligStart;
1491         theIL->Raster(dest, NULL, shape_run_A8_OR);
1492         ligStart=((uint32_t*)(((char*)ligStart)+m.rs));
1493     }
1494     theS->EndQuickRaster();
1495     delete theI;
1496     delete theIL;
1497 }
1498
1499
1500 /*
1501   Local Variables:
1502   mode:c++
1503   c-file-style:"stroustrup"
1504   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1505   indent-tabs-mode:nil
1506   fill-column:99
1507   End:
1508 */
1509 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :